Correct option is A
Correct Answer: A binary fission in a definite plane
Explanation:
Leishmania is a unicellular protozoan parasite responsible for diseases like Leishmaniasis (Kala-azar). It reproduces asexually through binary fission but in a definite plane due to its flagellum. The binary fission occurs longitudinally along the plane of the flagellum, ensuring that each daughter cell retains a flagellum for motility.
Information Booster:
- Leishmania is a flagellated protozoan that causes Kala-azar (Visceral Leishmaniasis).
- It is transmitted by the bite of female sandflies (Phlebotomus).
- Binary fission in Leishmania is longitudinal, ensuring the flagellum is preserved.
- Other protozoa, like Amoeba, divide in any plane, but Leishmania follows a fixed pattern.
- Leishmaniasis symptoms include fever, weight loss, and spleen/liver enlargement.
Analysis of Other Options:
- Binary fission in two equal halves (Incorrect) – Though binary fission divides the cell, the split follows a specific plane, not just into equal halves.
- Binary fission in only vertical planes (Incorrect) – The division occurs along the flagellar axis, not necessarily vertical.
- Binary fission in any plane (Incorrect) – Unlike Amoeba, Leishmania has a fixed division plane.
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